Face shields are your friend. Might be a good idea to use one while testing such things. that's a ;esson that finally sank in 20 years ago.
I was working at a local factory that made peanut butter, ketchup, salad dressings, those kind of things, when i was given a choice. take the week off on a lay off, or come in for peanut line oven cleanup.
I chose oven cleanup.
On the third night that week, after working the roof end of the chimney the first two nights, in zero degree weather, i was asked to work the oven cleanup on second shift, so i took the chance to do so. I picked up a cutoof tool with a spiked stripper on it, grabed the safety classes, crawled in, and hooked up to the air line. Here's what I didn't know, that happened right before the last guy to use it went off shift.
As he was coming down the ladder, siad tool fell out of his pocket, and fell 30 feet to the factory floor, cracking a couple of those spines. A fact I found out about an hour intom my shift, when I fired it up, after using the scrapper to get the loose material off the walls first.
I powered it up, felt the wobble, and as I released the trigger, two of those spines flew off, one hit the wall, the other sank into my left cheek. I felt my face go numb, unplugger the air line, and exited the machine to head to the head, and check myself in the mirror, thinking I maybe had a bruise.
instead i had about 4 inches of hardened steel sticking out of my face, about halfway down it's shaft. i pulled it out, stuck it in my shirt pocket, and walked over to the foreman's office to fill out a report. One of the things asked on said report was how can this incident never be repeated again, to which I put down "using a face shield instead of a pair of glasses or goggles."
I found out two weeks later what had happened as the guy came down the ladder, and which temp he was, then went to have a word with him about the incident. I was told to do something physically impossible, so I reacted by beating the everlovin' ______ out of him.
his lack of reporting said incident to maintenence could have cost me an eye, so i6t was justified IMHO, once he told me to go ____ myself.